Home / 190,007.56-262,208.91-105,129.28

Finding the Fourth Proportional to 190,007.56, 262,208.91 and 105,129.28

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Solution

The fourth proportional to 190,007.56, 262,208.91 and 105,129.28 is: 145,077.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,007.56 : 262,208.91 = 105,129.28 : x
  2. Step 2: Convert to fraction form
    190,007.56/262,208.91 = 105,129.28/x
  3. Step 3: Cross multiply
    190,007.56x = 262,208.91 × 105,129.28
  4. Step 4: Simplify right side
    190,007.56x = 27,565,833,917.88
  5. Step 5: Solve for x
    x = 27,565,833,917.88/190,007.56
  6. Step 6: Final answer
    x = 145,077.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.